Diaper size??

What size diaper is your LO in? My girl is 17 lbs she does have some junk in her trunk she is in size 3 luvs. She never wet through them till the last few nights I was going to put her in 4's for bed time. I put her in a buggies size 4 pure and natural tonight. We will see... Tell me about your LO

We're almost ready to move up to size 3; just finishing up our last pack of 2s. LO is 18 pounds, 1 oz. We use Huggies little snugglers or Pampers swaddlers at night, and pampers baby dry during the day.